Alarm base



FIG. 1 is a perspective view of an alarm base of the present invention;

FIG. 2 is a right side plan view of the alarm base of FIG. 1;

FIG. 3 is a front plan view of the alarm base of FIG. 1;

FIG. 4 is a left side plan view of the alarm base of FIG. 1;

FIG. 5 is a top plan view of the alarm base of FIG. 1;

FIG. 6 is a rear plan view of the alarm base of FIG. 1;

FIG. 7 is a bottom plan view of the alarm base of FIG. 1; and,

FIG. 8 is a perspective view of the alarm base of FIG. 1 but with the cover open.

The broken lines shown in FIG. 6 form no part of the claimed design. 

The ornamental design for an alarm base, as shown and described. 